I'm Rei Hitoma, a self-professed misanthrope thanks to some past trauma. A year has already passed since I started teaching at Shiranui Private High School where demi-human girls learn how to become regular human beings. And now there are three new additions to my class: a dragon, a mouse, and a black cat. But somehow these students are much more troublesome than my previous ones... What will this new school year bring? Can someone like me-someone who hates people-really help these demi-humans realize their wish to become real humans?